At least 10% of the world's tree species are threatened with extinction and pathogens are increasingly implicated in tree threats. Coextinction and threats to affiliates as a consequence of the loss or decline of their host trees is a poorly understood phenomenon. Ash dieback is an emerging infectious disease causing severe dieback of common ash Fraxinus excelsior throughout Europe. We utilized...

Common ash ( Fraxinus excelsior L.) is a keystone tree species in Europe. However, since the 1990s, this has been experiencing widespread decline and mortality due to dieback [ Hymenoscyphus fraxineus (T. Kowalski) Baral, Queloz Hosoya]. Besides H. , emerald borer Agrilus planipennis Fairmaire), an invasive alien pest already devastating trees western Russia, spreading westward becoming emergin...

We assessed the irradiance-related plasticity of hydraulic architecture in saplings of Betula pendula Roth., a pioneer species; Acer pseudoplatanus L., Fraxinus excelsior L. and Quercus robur L., which are post-pioneer light-requiring species; and Quercus petraea Matt. Liebl. and Fagus sylvatica L. Plants were grown in pots in 36%, 16% and 4% of full sunlight. Hydraulic conductance was measured...

Heat treatment may result in variation of wood equilibrium moisture content (EMC). During this study, tauari (Couratari oblongifolia), ash (Fraxinus excelsior), and oak (Quercus rubra) woods were heat-treated at 190, 200, and 210oC for 3 hours and then put into a conditioning chamber with a temperature from 30 to 75oC and a relative humidity from 50 to 90%. The isothermal moisture adsorption cu...

Abstract Common ash ( Fraxinus excelsior L.) is an economically and ecologically important tree species in Europe acutely threatened by dieback. Here, we present a new set of Simple Sequence Repeat markers for F. six related based on published silico designed primers. Forty SSR markers, mainly from genic regions, were tested amplification polymorphism characterized two populations Germany. Tran...

For the last two decades, large-scale population decline of European ash ( Fraxinus excelsior) has occurred in Europe because introduction alien fungal pathogen, Hymenoscyphus fraxineus , from East Asia. Since is a keystone species having critical importance for biodiversity, and only small percentage appears to show some tolerance against loss trees means that other associated organisms, espec...